Evaluation of immiscible CO2 injection in high water production reservoir in the Pannonian basin

Carbon dioxide (CO2) flooding is one of the most important and used enhanced oil recovery (EOR) method because it does not only increase efficiency but also as an underground CO2 storage. It considered a very complex involves knowing fluid phase behavior with different concentrations. should be noted that swelling (volume increase) dissolution carbon has significant effect on recovery. When this occurs, decrease in viscosity observed. In study, reservoir 3D simulation modeling approach was applied to evaluate immiscible miscible high WC reservoir. To reduce time, PVT composition grouped into 5 components. The 3-parameter, Peng-Robinson Equation State (EOS) match experimental data by using Schlumberger's ECLIPSE PVTi software. One-dimensional slim-tube model defined 300 software determine minimum miscibility pressure (MMP) for injection CO2. Beside approach, analytical MMP estimation carried out several correlations. Schlumberger Petrel set up static dynamic model. Various scenarios have been simulated these results compared.